Question ram slots

[umar11]

Hi i am new to all this.
I have p8z77v- pro with i5 2500k
the problem I am facing is I can't install 2 rams or more rams on this system if I do it loads to windows logo then it loses all power and freeze there forever.
I am using A1 and B1 slots
Ram I am using is 4gb ripjaws x ddr3 1600 xmp ready ( rams are fine if I install them on another system it works.
P.S in bios it recognising that 2 rams are intalled.
If I only install 1 ram it boots past windows and every thing seems to work.
I am running latest version of bios which is 2014.

 

[Calvin7]

4gb ripjaws x ddr3 1600 xmp ready

No part number or link to memory.

Memory modules sold as Singles have no guarantee to work in any configuration other than as a Single module.

 

[umar11]

It is bought as set of 2 and it says 2x4 gb

F3-12800cl9d-8gbxl
This is part number I hope this helps